反射式时间平均全息干涉术

本文利用反射全息方法拍摄时间平均干涉全息图。观察物体振型更加直观、方便。使物体的振动分析得到简化。     

用剪切干涉仪定焦

由于剪切干涉仪结构简单、使用方便,用它来确定象的位置是很合适的。剪切干涉图中出现的条纹数或者条纹的方向与离焦之间存在着线性关系。当离焦量为零时,干涉图上或者无条纹,或者条纹有确定的方向。文中提出了计算定焦误差的方法,分析了定焦误差与双频光栅的频率差(或剪切量)及系统的F数之间的关系。给出了实验结果和应用的例子。     

Obtaining digital elevation data in different terrain and physiognomy regions with spaceborne InSAR and its application analysis

Synthetic Aperture Radar Interferometry (for short, InSAR) is a new kind of earth observation technology, which has obtained great development in recent ten years and has a great development potential and successful future. In this note, three typical regions with different physiognomies and terrains have been selected as study regions to extract their Digital Elevation Model (DEMs). Compared with the existing 1: 250000 DEM and by analyzing their results, we have obtained its accuracy and applicable scopes. The results show that in the region (plains, mountains or highlands) with dry surface and sparse vegetation, because of the better correlatability of images, the DEM obtained by InSAR is evidently better than the existing 1: 250000 DEM and the accuracy can reach 4–6 m; in the thick-vegetation-covering region, correlatability between images descends and the accuracy of InSAR DEM can only reach about 30 m worse than its existing 1: 250000 DEM; in the middle covering field, the accuracy of InSAR DEM with tandem images can reach about 10 m as well; yet in water space, such as lakes and rivers, InSAR DEM shows a big error since there is only quite faint signal reflected to the sensor. Then the conclusion has been got: in the west of China, where it has a lack-vegetation and dry ground, InSAR is completely feasible to be applied to such a complicated nature environment region.     

三维温度场中的多通道干涉层析

本文论述了非对称温度场的干涉层析法原理,提出了一种利用多路F-P干涉仪来进行三维温度场的多通道干涉层析的新方法,并用计算机模拟计算了各通道的最佳夹角。应用该方法测量了非轴对称双芯火焰,定量给出了其三维温度分布值。     

噪声背景下干涉条纹提取算法

干涉条纹提取是干涉条纹图象自动定量分析的基础.本文提出一种有效的干涉条纹提取算法.首先检测出条纹曲线点,然后对被检测出的条纹曲线点进行跟踪和断口连接.文中详细讨论了条纹曲线点检测原理、条纹曲线点跟踪及断口连接准则,并给出了令人满意的实验结果.     

非旋转轴对称非球面象散分布测量

本文描述了渐变焦眼镜片上的非旋转轴对称非球面的象散分布测量方法，系统地介绍了所采用的泰曼－格林干涉仪和横向剪切干涉仪的两种测量原理与实验装置，并将这两种仪器的测量结果进行了比较．     

双光栅正弦相位调制(SPM)干涉测量技术的发展与应用

简述了正弦相位调制干涉法的发展,重点介绍了双光栅正弦相位调制在物体阶梯表面的高度差、物体表面形貌和振动物体表面形貌的等测量领域的应用,并提出了用双光栅正弦相位调制测量振动物体温度的想法。